SIST EN 10255:2004+A1:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditionsSRJRMLTubes en acier non-allié filetables et soudables - Conditions techniques de livraisonRohre aus unlegiertem Stahl mit Eignung zum Schweissen und Gewindeschneiden - Technische LieferbedingungenTa slovenski standard je istoveten z:EN 10255:2004+A1:2007SIST EN 10255:2004+A1:2007en;fr;de23.040.10Železne in jeklene ceviIron and steel pipesICS:SIST EN 10255:20041DGRPHãþDSLOVENSKI
STANDARDSIST EN 10255:2004+A1:200701-junij-2007

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10255:2004+A1
April 2007 ICS 23.040.10
Supersedes EN 10255:2004English Version
Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditions
Tubes en acier non-allié filetables et soudables - Conditions techniques de livraison
Rohre aus unlegiertem Stahl mit Eignung zum Schweißen und Gewindeschneiden - Technische Lieferbedingungen This European Standard was approved by CEN on 27 May 2004 and includes Amendment 1 approved by CEN on on 5 March 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10255:2004+A1:2007: E

Correlation between specified outside diameter, thread size, and nominal diameter.17 Annex B (normative)
Types of tubes with wall thickness different from medium and heavy series.18 B.1 General.18 B.2 Requirements.18 B.3 Marking.18 Annex ZA (informative)
!!!!Clauses of this European Standard addressing the provisions of the EC Construction Products Directive for applications covered by Mandate M/131.20 ZA.1 Scope and relevant characteristics.20 ZA.2 Procedure for attestation of conformity of pipes.21 ZA.2.2 Declaration of conformity.22 ZA.3 CE marking and labelling.23

1 Scope This document specifies the requirements for circular non-alloy steel tubes suitable for welding and threading and provides a number of options for the finish of tube ends and coatings.
This document covers tubes of specified outside diameter 10,2 mm to 165,1 mm (thread size 1/8 to 6) in two series, medium and heavy, and three types of designated thicknesses. NOTE Tubes manufactured according to this document can be used for the conveyance of fluids as well as for other applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. The requirements of this European Standard rule when they differ from those in the standards and documents referred to below: EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature EN 10020, Definition and classification of grades of steel EN 10021, !General technical delivery for steel products" EN 10027-1, Designation systems for steel - !Part 1: Steel names" EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10204, Metallic products - Types of inspection documents !deleted text" EN 10240, Internal and/or external protective coatings for steel tubes - Specification for hot dip galvanized coatings applied in automatic plants EN 10241, Steel threaded pipe fittings EN 10242, Threaded pipe fittings in malleable cast iron EN 10246-1, Non destructive testing of steel tubes - Part 1: Automatic electromagnetic testing of seamless and welded (except submerged arc welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness EN 10226-1 Pipe threads where pressure-tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and designation !EN 10226-2", Pipe threads where pressure-tight joints are made on the threads - Part 2: Taper external threads and taper internal threads - Dimensions, tolerances and designation EN 10266:2003, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in product standards EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods (ISO 1461:1999)

EN 10266:2003 and the following apply. 3.1 Series and Types
designation used in conjunction with the diameter to define the thickness and the mass per unit length of the tube 3.2 Bare tube tube whose surface is as manufactured without subsequent coating 4 Classification and designation The steel specified in this document is classified as a non-alloy quality steel in accordance with EN 10020. The steel name S195 T has been established in accordance with EN 10027-1. The steel number 1.0026… has been established in accordance with EN 10027-2. 5 Information to be !!!!obtained from"""" the purchaser 5.1 Mandatory information The following information shall be !obtained from" the purchaser at the time of enquiry and order: a) Quantity (mass or total length or number of tubes); b) Seamless or Welded tube manufacturing process (S or W); c) The term “tube”; d) The number of this European Standard (EN 10255); e) Specified outside diameter (D) in millimetres or thread size (R) (see Table 2 or Annex B); f) Wall thickness (T) in millimetres or series (M or H) (see Table 2) or type (L or L1 or L2) (see Annex B). 5.2 Options A number of options are specified in this document and these are listed below.
In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the tubes shall be supplied in accordance with the basic specification (see 5.1). 1) Threaded ends (see 7.2); 2) Tube with socket (see 7.2);

The tube ends shall be cut nominally square to the axis of the tube and shall be free from excessive burrs. 7.2 Alternative finishes and protection of the tube ends Alternative types of end finish may be obtained by selecting from the following options: Option 1: Tube ends shall be supplied with external taper threads in accordance with EN 10226-1 / EN 10226-2. Option 2: Tube shall be supplied with one socket per tube.
The socket shall be in accordance with EN 10241 or EN 10242 and unless Option 3 is requested the choice of standard and the socket type shall be at the discretion of the manufacturer.
The purchaser shall be informed to which standard and of which type of socket is to be supplied. Option 3: The purchaser shall specify the standard, and which type of socket is to be supplied in accordance with Option 2. NOTE Purchasers who require tubes to be threaded and supplied with a socket should specify either Options 1 and 2 or Options 1 and 3. Protection, to prevent ingress of foreign matter or physical damage or rusting of the threads, may be obtained by selecting from the following options: Option 4: One cap or plug fitted to each tube end to prevent ingress of foreign matter; the type is at the discretion of the manufacturer. Option 5: The tube shall be supplied with the thread varnished or with thread protection. The type of protection is at the discretion of the manufacturer. 7.3 Suitability for hot dip galvanizing Option 6: The tubes shall be suitable for galvanizing to EN ISO 1461 or to EN 10240 coating quality A.2, A.3, B.1, B.2 or B.3. Option 7: The tubes shall be suitable for galvanizing to EN 10240 coating quality A.1 (see 8.4.9). 7.4 Hot dip galvanized condition Option 8: The tubes shall be supplied galvanized according to EN ISO 1461. Option 9: The tubes shall be supplied galvanized according to EN 10240; the coating quality shall be specified by the purchaser at the time of enquiry and order. 8 Requirements 8.1 General The tubes when inspected in accordance with Clause 9 shall conform to the requirements of this document. In addition to the requirements of this document, the general technical delivery requirements specified in EN 10021 shall apply.

NOTE The steel specified in this document is weldable, however when subsequently welding tubes produced according to this document account should be taken of the fact that the behaviour of the steel during and after welding is dependent not only on the steel but also on the conditions of preparing for and carrying out the welding. 8.2.2 Tubes shall be suitable for cold bending and threading. NOTE When bending tubes produced in accordance with this document, appropriate tooling should be correctly used. 8.3 Appearance 8.3.1 The tubes shall be free from such external and internal surface defects that can be detected by visual examination. 8.3.2 The internal and external surface finish of the tubes shall be typical of the manufacturing process and, where applicable, the heat treatment employed.
The finish and surface condition shall be such that any surface imperfections or marks requiring dressing can be identified. 8.3.3 It shall be permissible to dress, only by grinding or machining, surface imperfections provided that, after doing so, the tube thickness in the dressed area is not less than the specified minimum wall thickness.
All dressed areas shall blend smoothly into the contour of the tube. 8.3.4 Surface imperfections which encroach on the specified minimum wall thickness shall be considered defects and tubes containing these shall be deemed not to conform to this document. 8.4 Dimensions, masses and tolerances 8.4.1 Specified outside diameters (D), wall thicknesses (T) and masses per unit length Medium and Heavy series tubes are listed in Table 2.

Table 2 — Dimensions, diameter tolerance and mass per unit length Specified outside diametera Thread Sizea Outside diameter H M Heavy series Medium series Wall thickness Mass per unit length of bare tube Wall thickness Mass per unit length of bare tube D R max. min. T Plain end Socketed T Plain end Threaded and socketed (mm)
(mm) (mm) (mm) (kg/m) (kg/m) (mm) (kg/m) (kg/m) 10,2 1/8 10,6 9,8 2,6 0,487 0,490 2,0 0,404 0,407 13,5 1/4 14,0 13,2 2,9 0,765 0,769 2,3 0,641 0,645 17,2 3/8 17,5 16,7 2,9 1,02 1,03 2,3 0,839 0,845 21,3 1/2 21,8 21,0 3,2 1,44 1,45 2,6 1,21 1,22 26,9 3/4 27,3 26,5 3,2 1,87 1,88 2,6 1,56 1,57 33,7 1 34,2 33,3 4,0 2,93 2,95 3,2 2,41 2,43 42,4 1 1/4 42,9 42,0 4,0 3,79 3,82 3,2 3,10 3,13 48,3 1 1/2 48,8 47,9 4,0 4,37 4,41 3,2 3,56 3,60 60,3 2 60,8 59,7 4,5 6,19 6,26 3,6 5,03 5,10 76,1 2 1/2 76,6 75,3 4,5 7,93 8,05 3,6 6,42 6,54 88,9 3 89,5 88,0 5,0 10,3 10,5 4,0 8,36 8,53 114,3 4 115,0 113,1 5,4 14,5 14,8 4,5 12,2 12,5 139,7 5 140,8 138,5 5,4 17,9 18,4 5,0 16,6 17,1 165,1 6 166,5 163,9 5,4 21,3 21,9 5,0 19,8 20,4 a For relationship between specified outside diameter (D), thread size (R) and nominal diameter (DN), see Annex A. T = specified wall thickness.
8.4.2 Specified outside diameters (D), wall thicknesses (T) and masses per unit length for tube Types L, L1 and L2 are listed in Table B.1, B.2 and B.3 respectively. 8.4.3 The tolerance on out of roundness is included in the diameter tolerance. 8.4.4 For welded tubes the tolerance on wall thickness is:  ± 10 % .for M and H series and Type L ;  – 8 % with the plus tolerance limited by the mass tolerance,
for Types L1 and L2. 8.4.5 The mass tolerance on welded tubes is:  ± 7,5 % on bundles of 10 tons or more, for M and H series and Type L ;  +10%
-8% on individual tubes for Types L1 and L2.

The height of the internal weld seam shall not exceed 0,3 mm + 0,05 T and the internal weld seam profile shall blend smoothly into the contour of the tube. 8.4.10 Unless Option 10 is specified, tubes shall be delivered in one standard length per order item, either 6 m or 6,4 m at the discretion of the manufacturer. Option 10: The tubes shall be supplied in the standard length, either 6 m or
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